Sheet-guiding device for saturating tanks



Feb. 6, 1923.

A, ANDERSONv HEET GUI DING DEVICE FOR SATURAT I NG TANKS 2 SHEETS-SHEET I F LED DEc 24, I91 9 Feb. 6, 1923.

A ANDERSON SHEET Gun DING DEVICE FOR SATURAT NG TANKS 2 SHEETS'SHEET 2 Fl LED Dec Patented Feh. 6, i923.

ALFRED ANDERSON, OF EAST RUTHERFORD, NEW JERSEY, ASSIGNOB TO THE FLINT KOTE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

SHEET-GUIDING DEVICE FOR SATURATING TANKS.

Application filed December 24, 1919. Serial No. 347,138.

To all wlwm it may concern:

. Be it known that I, ALFRED ANDERSON, a citizen of the United States, residing at East Rutherford, in the county of Bergen and State of New Jersey, have invented new and useful Improvements in Sheet-Guidmg Devices for Saturating Tanks, of which the following is a specification.

This invention has relation to apparatus for coating or impregnating fabric, such, for example, as for impregnating paper felt with a waterproofing compound in the manufacture of prepared roofing.

In the production of such roofing, the sheet of paper feltis drawn through a tank containing asphalt or other suitable bituminous or resinous compound, in a molten and liquid condition, so that the sheet will absorb the molten material in its pores or interstices. Such paper felt varies in porosity and absorbent characteristics according to the materials of which it' is made and other conditions surrounding its manufacture, and consequently the length of time in which it is immersed in the impregnating compoundmust vary with its porosity or powers of absorption. Likewise the period of immersion frequently depends upon the viscosity of the saturant. While it is therefore highly desirable to vary the period in which the fabric is iminersed in the saturating compound, it is not desirable that this should be accomplished by greatly varying the speed at which the fabric travels through the saturating tank. It will be readily understood that, where the speed of travel is decreased, a decrease in production follows as a logical result, and moreover it fre-. quently causes the slowing down of the other instrumentalities which operate on or in connection with the saturated sheet.

- ally happens that the sheet parts or is broken while in or before passing through the satu rating tank, thereb requiring the-sheet to he threaded throu or around the various guides which guide it during its submergence in the compound. -Where such materiais as molten asphalt, heated to a high temperature, are employed, the operation of threading or passing the sheet through Roofing felt, because of the necessity of having it.-

or around the guides is a dangerous one for the operatives.

The present invention consists of a saturating tank having improved guiding means for guiding the traveling fabric or sheet through the saturating compound, so constructed that the guides may be moved to a point above the level of the saturant to permit the sheet to be engaged therewith, and then submerged in the saturant so as to carry the sheet thereinto. means, likewise, are so constructed and arranged that the period of immersion of the sheet in thesaturant may be varied.

On the accompanyingrdrawings,+

Figure 1 illustrates in side elevation a saturating tank provided with sheet-guidlng means embodying the present improvement.

Figure 2 represents a section on the line 22 of Figure 1.

Figure 3 represents a section on the line 33 of-Figure 1.

Figure 4 represents a transverse vertical section on the line ii of Figure 1.

I have not illustrated the roll from which the sheet of felt is drawn nor the feeding means by which the sheet is caused to travel through the bath of molten saturant, as these are well known. It will be understood, however, that the sheet is preferably caused to travel at a uniform rate of speed by devices which may be stopped and started at the will of the operator, though the speed mag be varied if desired.

n. the drawings, a tank 10 is illustrated for containing a body of molten asphalt, bitumen or other waterproofing compound. Usually means (not shown) are employed for maintaining the saturant at the desired temperature and at the desired degree of viscosity. At one end of the tank is shown a guide roll 11 journaled in brackets 12, over which the sheet end of the tank are shown as mounted in a bracket 14. The sheet of felt or other material to be saturated is indicated at 15. For the purpose of causing the sheet .to travel through the bath of saturating compound, I employ guides which are mounted in a rotatable frame. These guides may The guiding I asses from the roll of ,raw felt. 'Squeeze ro s 13, 13, at the other take the form of rods, but I have illl'f LIL! trated them as rolls 16, 1'2 and 18 which are respectively journaled on shafts or rods 19, 20 and 21. The frame, in which said rods are mounted, consists of end bars 22, which intermediate of their ends are rigidly se cured to a shaft 23. ed in one end of each of said bars and guides 16 and 17 are mounted in the other ends of said bars, so that the guide 18 and the guides 16 and 17 are practically diametrically opposite each other. The frame is mounted so that it may be moved bodily vertically and also so that it'may be partially rotated in one direction or the other. The shaft 23 is journaled in a carrier comprising two vertical slides 2 which are operatively engaged with two upright guides 25. The guides are provided or formed with rack teeth, as indicated at 26, and in the upper ends of the slides there is journaled a shaft 27 having pinions 28 thereon intermeshing with the racl; teeth. A hand wheel 29 on the shaft 2? affords means for rotating the shaft, and, by the engagement of the pinions with the uprightv racks, causing the carrier and the frame thereon to be raised or lowered as the casebe. Assuming that the rotatable guide frame is in the position seen in Figure 1, it is quite apparent that with ease. the sheet 15 of felt may be passed under the guide 18 and between the guides 16 and 17, and thence to the squeeze rolls. 'lliereupon the carrier may be depressed so as to carry the guides down to a point where the fabric will be immersed in the saturating compound.

lt is desirable, as previously stated, that the period of immersion of the fabric in the saturant, or the length of fabric that at any one time is immersed in the saturant may be increased. This is accomplished by rotating the guide frame in the direction of the arrows in Figure 1 so that the fabric will be looped about the guides and caused to pass back and forth While submerged. By rotating the guide frame through an arc of 180, the guides may be so positioned that the sheet, after leaving the roll 11, will pass under the guide 17, thence around guide 18, and then under and over the guide 16 to the squeeze rolls. By rotating the frame through an arc of less than 180", the length of fabric undergoing immersion may be decrease it is unnecessary with this construction to adjust the guides relatively, their relation to the sheet controlling the time of saturation.

The guide 18 is mount- The slides may be clamped in any position to which they may be adjusted by any suitable form of clamping mechanism. For example, as shown in Figures 2 and 3, the guides may be provided with webs 35, 36, which embrace the upright racks 25 and which may be clamped together by clamping screws 3?. These screws are illustrated as passing through blocks 38 which bear against the faces of the upright guides opposite the toothed faces thereof.

In threading the sheet of fabric throu h the machine, the guide frame may be e evated to the position shown in full lines in Figure 1 and the sheet engaged with the guides in the manner previously described. The guide frame may then be lowered below the level of the saturant, which is indicated by the dotted line a a, or the frame may first be rotated partially before it is depressed to submerge the sheet in the saturant.

Having thus explained the nature of my said invention and described a way of malting and using the same, although without attempting to set forth all of the forms in which it may be made or all of the modes of its use, what I claim is:

l. Sheet-treating apparatus comprising a tank for containing a body of liquid saturatcoinpound, guides for a. traveling sheet to guide the sheet through the saturating compound, and the means for varying the guiding relation of the guides to the sheet while Dmaintaining said uides relatively iiiiecto vary the length oi the sheet undergoing immersion.

2. Sheet-treating apparatus, comprising a tank for containing a body of liquid saturating compound, spaced guides for a travelling sheet to guide the sheet through the saturating compound, a frame in which said guides are mounted, and means for bodily rotating said frame to vary the length of the sheet undergoing immersion.

3. Sheet-treating apparatus, comprising a tank for containing a body of liquid saturat ing compound, spaced guides for a. travelling sheet to guide the sheet through the saturating compound, a frame in which said guides are mounted, means for bodily moving said frame to expose said guides above the level. of the saturating compound, and means for bodily rotating said frame to vary the length of'the sheet undergoing iin- I mersion.

Sheet-treating mechanism, comprising a tank for containing a body of liquid saturating compound, parallel guides for a travelling sheet to guide said sheet through the saturating compound, and means for partially revolving said guides to form loops in the sheet.

5. Sheettreating mechanism, comprising a for containing a body of liquid'saturating compound, a shaft, arms secured on said shaft intermediate of their ends, guides for a travelling sheet mounted in the opposite ends of said arms, and means for rotating said shaft to cause said guides to form loops in said sheet.

6. Sheet-treatin mechanism, comprising a tank for contaimng'a body of liquid saturating compound, a shaft, arms secured on said shaft intermediate of their ends, guides for a travelling sheet mounted in the opposite ends of'said arms, means for rotating in said sheet, a carrier for said shaft, and

means for moving aid carrier up and down in reference to said tank.

8. Sheet-treating mechanism, comprising a tank for containing a body of liquid saturating compound, a shaft, arms secured on said shaft intermediate of their ends, guides for a travelling sheet mounted in the opposite ends of said arms, means for rotating said shaft to cause said guides to form loops in said sheet, a carrier for said shaft, upright guideways for said carrier, and rac and-pinion mechanism for moving said carrier on said guideways.

9. Sheet-treating mechanism, comprising a tank for containing a liquid saturating compound, a rotatable frame, a shaft for supporting and rotating said frame, a guide on said frame on one side of said shaft, a pair of guides on said frame on the other side of said haft, said guides being adapted to guide a sheet through the saturating compound, and means for partially rotating said shaft whereby said guides form loops in the sheet.

10. Sheet-treating mechanism, comprising a'tank for containing a liquid saturating compound, "a rotatable frame, a shaft for supporting and rotating said frame, a guide on said frame on one side of said shaft, a pair of guides on said frame on the other side of aid shaft, said guides being adapted to guide a sheet through the saturating compound, means for partially rotating said shaft whereby said guides form loops in the sheet, and mechanism for bodily moving said frame and guides vertically to immerse them in or withdraw them from the compound in the tank.

11. Sheet-treating apparatus comprising a tank for containing a body of liquid saturating compound, spaced guides for a traveling sheet to guide the sheet through the saturating compound, a frame on which said guides are mounted, and mean for moving said frame to vary the efiective guiding relation of said. guides to said sheet while they remain fixed relative to each other to thereby vary the length of the sheet undergoing 1mmers1on.

In testimony whereof I have afiixed my signature.

ALFRED ANDERSON. 

